CN216324987U - Flow field control device for crystallizer of slab continuous casting machine - Google Patents
Flow field control device for crystallizer of slab continuous casting machine Download PDFInfo
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- CN216324987U CN216324987U CN202122834490.3U CN202122834490U CN216324987U CN 216324987 U CN216324987 U CN 216324987U CN 202122834490 U CN202122834490 U CN 202122834490U CN 216324987 U CN216324987 U CN 216324987U
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- 238000009749 continuous casting Methods 0.000 title description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 239000010949 copper Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 31
- 239000010959 steel Substances 0.000 abstract description 31
- 238000005266 casting Methods 0.000 abstract description 16
- 239000002893 slag Substances 0.000 abstract description 7
- 230000005499 meniscus Effects 0.000 abstract description 3
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005672 electromagnetic field Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 208000029154 Narrow face Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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Abstract
The utility model provides a slab caster crystallizer flow field controlling means, includes two flow field control assembly and control module, two flow field control assembly symmetric distribution is in two crystallizer broadside copper both sides, flow field control assembly includes two by independent control's magnetic field generator and connects two magnetic field generator's connecting block of not magnetic conduction, two magnetic field generator is upper portion magnetic field generator and lower part magnetic field generator respectively, magnetic field generator includes the shell, be provided with the inductor that produces alternating current field or direct current field in the shell, shell outside terminal surface both sides are equipped with connects a plurality of cables, the cable passes through control module connects the power, and control module is located the production line switch board. The utility model is provided with an alternating current mode, a braking mode and a mixed mode, performs the flow control function of an electromagnetic field on molten steel, and has the functions of reducing the fluctuation of a meniscus of a crystallizer, reducing soak through slag of a casting blank, improving the axial crystallization rate of the casting blank and the like, thereby improving the metallurgical effect of the casting blank.
Description
Technical Field
The utility model relates to the technical field of slab continuous casting electromagnetic metallurgy, in particular to a flow field control device for a crystallizer of a slab continuous casting machine.
Background
The flow field control of the crystallizer of the continuous casting machine is very important for controlling the quality of a casting blank, and the flow rate control of the upper strand flow and the lower strand flow of the crystallizer is very important. When the pulling speed is low, the flow of molten steel in the crystallizer is not facilitated, and the purification of the molten steel and the upward floating of slag inclusion are not facilitated; when the drawing speed is high, the impact depth of the next stream is too deep, and bubbles and slag inclusion are not easy to float upwards.
Chinese patent CN201620699034.9 discloses a multifunctional multi-mode electromagnetic current control device for a slab continuous casting crystallizer, which has only an alternating current mode, although having multiple modes, and does not have the function of slab electromagnetic braking under the condition of high drawing speed. Chinese patent CN201710107017.0 discloses a method for controlling a flow field of a slab continuous casting crystallizer, in which an upper electromagnetic stirring device and a lower electromagnetic braking device are provided, and the upper part has no braking function under a high speed condition. And the lower part is provided with two local brake coils, so that the flow field of the crystallizer cannot be controlled globally.
At present, the thickness of a casting blank of a continuous casting machine is from 50mm to 475mm, and the pulling speed change is large and from 0.5m/min to 7.0m/min because the span of the size of the casting blank is large. Generally, in order to enrich the product chain of continuous casting machines in a steel mill, the casting blank size of one continuous casting machine is large, and the drawing speed of the continuous casting machine is 0.5-3.0 m/min. When the drawing speed is low, the quality of the casting blank needs to be improved through electromagnetic stirring, when the drawing speed is high, the quality of the casting blank needs to be improved through electromagnetic braking, and when the drawing speed is medium, the quality of the casting blank is improved through combined electromagnetic action.
The crystallizer flow field in the slab continuous casting is complex, the state of the flow field is unstable, and a more reasonable flow field control device is needed to adapt to the crystallizer of the slab continuous casting machine with a large pulling speed range.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the related art, the utility model provides a slab caster crystallizer flow field control device, which can solve the problems.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a slab caster crystallizer flow field controlling means, includes two flow field control assembly and control module, two flow field control assembly symmetric distribution is in two crystallizer broadside copper both sides, flow field control assembly includes two by independent control's magnetic field generator and connects two magnetic field generator's connecting block of not magnetic conduction, two magnetic field generator is upper portion magnetic field generator and lower part magnetic field generator respectively, magnetic field generator includes the shell, be provided with the inductor that produces alternating current field or direct current field in the shell, shell outside terminal surface both sides are equipped with connects a plurality of cables, the cable passes through control module connects the power, control module is located the production line switch board.
Furthermore, the connecting block is H-shaped, and the upper magnetic field generator and the lower magnetic field generator are symmetrically connected to the upper groove and the lower groove of the connecting block.
Further, the inductor mainly comprises an E-shaped iron core and an excitation coil.
Furthermore, the E-shaped iron core is formed by laminating silicon steel sheets, the E-shaped iron core comprises 4N or 6N magnetic poles, and N is a positive integer.
Furthermore, the excitation coil is wound on the magnetic pole and is a concentrated short-moment winding coil, and the excitation current in the excitation coil is 0-1000A.
Furthermore, the magnetic pole penetrates out of the shell, and the distance between the upper side face of the magnetic pole and the end face of the copper plate of the wide-face copper plate of the crystallizer is 90-200 mm.
Furthermore, the shell on the cable both sides still is equipped with a pair of heat dissipation water pipe, the heat dissipation water pipe is including heat dissipation inlet tube and heat dissipation outlet pipe.
Further, the control module includes an alternating current mode, a braking mode, and a hybrid mode.
Further, the power supply comprises an alternating current power supply or a direct current power supply.
The utility model has the beneficial effects that: the utility model is provided with an alternating current mode, a braking mode and a mixed mode, performs the flow control function of an electromagnetic field on molten steel, and has the functions of reducing the fluctuation of a meniscus of a crystallizer, reducing soak through slag of a casting blank, improving the axial crystallization rate of the casting blank and the like, thereby improving the metallurgical effect of the casting blank, and the concrete performance is as follows: when alternating current is introduced into the upper magnetic field generator and the lower magnetic field generator, an alternating current magnetic field is generated to carry out electromagnetic stirring on the molten steel with low pulling speed, and bubbles and slag inclusion can be used for floating, so that the quality of a casting blank is improved; when the upper magnetic field generator and the lower magnetic field generator are electrified with direct current, the direct current magnetic field is generated to electromagnetically brake the molten steel with high pulling speed, so that the flow speed of the molten steel can be reduced, the fluctuation of a meniscus of the liquid crystallizer is controlled, and the slag entrapment of the molten steel is reduced; when the upper magnetic field generator is electrified with alternating current to generate an alternating current magnetic field, the lower magnetic field generator is electrified with direct current to generate a direct current magnetic field, the electromagnetic stirring of the upper part of the crystallizer and the electromagnetic braking of the lower part of the crystallizer are carried out on molten steel at the intermediate pulling speed, and bubbles and slag inclusions can float upwards, so that the quality of casting blanks is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
The utility model is explained in further detail below with reference to the drawing.
Fig. 1 is a schematic structural diagram of a slab caster crystallizer flow field control device according to an embodiment of the present invention;
FIG. 2 is a top view of a flow field control device of a slab caster crystallizer according to an embodiment of the present invention;
FIG. 3 is a left side view of a flow field control device of a slab caster crystallizer according to an embodiment of the present invention;
fig. 4 is an exploded view of a magnetic field generator of a flow field control device of a slab caster crystallizer according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a magnetic field generator of a flow field control device of a slab caster crystallizer according to an embodiment of the present invention;
FIG. 6 is an AC wiring diagram of a flow field control device of a slab caster crystallizer according to an embodiment of the present invention;
fig. 7 is a direct-current mode wiring diagram of a slab caster crystallizer flow field control device according to an embodiment of the utility model.
In the figure:
1. a flow field control assembly;
2. a magnetic field generator;
21. an inductor; 22. a housing; 23. a heat dissipation water pipe; 24. a cable; 211. an E-shaped iron core; 212. a field coil; 2111. a magnetic pole; 21111. the upper side surface of the magnetic pole;
3. connecting blocks; 4. a crystallizer narrow-face copper plate;
5. a wide-face copper plate of the crystallizer;
51. the end face of the copper plate;
6. a water gap; 7. and (3) molten steel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1-5, a slab caster crystallizer flow field control device, including two flow field control assembly 1 and control module, two 1 symmetric distribution in two crystallizer broadside copper 5 both sides, flow field control assembly 1 includes two by independent control's magnetic field generator 2 and connects two magnetic field generator 2's connecting block 3, two magnetic field generator 2 is upper portion magnetic field generator and lower part magnetic field generator respectively, magnetic field generator 2 includes shell 22, be provided with the inductor 21 that produces alternating current magnetic field or direct current magnetic field in the shell 22, shell 22 outside terminal surface both sides are equipped with and connect a plurality of cables 24, the cable passes through control module connection power, control module is located the production line switch board.
The connecting block 3 is H-shaped, the upper magnetic field generator and the lower magnetic field generator are symmetrically connected in the upper groove and the lower groove of the connecting block 3, the magnetic field generators 2 can be detachably connected with the connecting block 3 through bolts, maintenance and replacement are convenient, the four magnetic field generators 2 are identical in structure, and the number of spare parts of the device is reduced.
The inductor 21 in the utility model mainly comprises an E-shaped iron core 211 and an excitation coil 212, wherein the E-shaped iron core 211 is formed by laminating silicon steel sheets, the E-shaped iron core 211 comprises 4N or 6N magnetic poles 2111, N is a positive integer, when two phases are electrified, the E-shaped iron core corresponds to 4N magnetic poles, and when three phases are electrified, the E-shaped iron core corresponds to 6N magnetic poles.
The excitation coil 212 is wound on the magnetic pole 2111, the excitation coil 212 is a concentrated short-moment winding coil, the excitation current in the excitation coil 212 is 0-1000A, and the magnitude of the excitation current is selected according to the working condition of a continuous casting machine and is controlled and output through a control module.
The magnetic pole 2111 penetrates out of the shell 22, the distance between the upper side 21111 of the magnetic pole 2111 and the copper plate end face 51 of the crystallizer broad-face copper plate 5 is 90-200 mm, the magnetic pole 2111 penetrates out of the shell and is opposite to the crystallizer broad-face copper plate 5, and meanwhile, the magnetic poles 2111 of the upper magnetic field generator and the lower magnetic field generator are arranged on the lower sides of the two copper plate end faces 51 of the crystallizer broad-face copper plate 5, so that the effective action of a magnetic field on molten steel is guaranteed.
The shell 22 on two sides of the cable 24 is also provided with a pair of heat dissipation water pipes 23, each heat dissipation water pipe 23 comprises a heat dissipation water inlet pipe and a heat dissipation water outlet pipe, and the heat dissipation water pipes 23 dissipate heat of the device, so that the device can work effectively.
The control module comprises an alternating current mode, a braking mode and a mixing mode, and the production line control system can select a proper working mode according to the working condition of the continuous casting machine and control the working mode.
The power supply comprises an alternating current power supply or a direct current power supply, the alternating current power supply or the direct current power supply can be used as the power supply, a corresponding circuit is arranged in the control module, the alternating current can be converted into the direct current or the direct current can be converted into the alternating current, and the output state of the power supply is controlled through the control module.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
When the continuous casting machine is used specifically, molten steel 7 flows into the crystallizer from the water gap 6, the molten steel 7 moves in an inner cavity formed by the narrow-face copper plate 4 and the wide-face copper plate 5 of the crystallizer, and alternating current is uniformly introduced into the upper magnetic field generator and the lower magnetic field generator (namely, an alternating current mode) when the continuous casting machine is at a low pulling speed. As shown in fig. 6, the magnetic field generator 2 generates an alternating magnetic field, which passes through the liquid molten steel 7, corresponding to a cutting magnetic field of the molten steel 7, and generates an induced current due to the electric conductivity of the molten steel 7, which interacts with the magnetic field to generate an electromagnetic force on the liquid flowing molten steel 7. The direction of the electromagnetic force is the same as the direction of the magnetic field, and the liquid molten steel 7 moves under the action of the electromagnetic force. When the UVW phase is 120, 0, -120, the moving direction of the molten steel is as shown by arrows in fig. 6, and the moving direction of the molten steel 7 is opposite to the original one by arbitrarily changing two phases of the UVW.
When the drawing speed of the continuous casting machine is high, the upper magnetic field generator and the lower magnetic field generator are uniformly introduced with direct current (namely, a direct current mode). As shown in fig. 7, when the liquid high-speed molten steel 7 flows at a certain speed, the magnetic field penetrates the liquid molten steel as shown by arrows, which corresponds to the fact that the molten steel 7 cuts a direct-current magnetic field at a high speed, and because of the electric conductivity of the molten steel, an induced current is generated, and the induced current interacts with the direct-current magnetic field to generate electromagnetic force on the liquid flowing molten steel 7, and the electromagnetic force is perpendicular to the direct-current magnetic field, and the direction of the electromagnetic force is opposite to the direction of the flow speed of the molten steel, thereby playing a role in braking the flow of the molten steel 7.
When the drawing speed of the continuous casting machine is the middle drawing speed, the upper magnetic field generator is connected with alternating current, and the lower magnetic field generator is connected with direct current (namely a mixed mode). As can be seen from fig. 6 and 7, the molten steel 7 at the upper part of the mold is stirred by the mold flow field control device, and the molten steel at the lower part of the mold is braked by the mold flow field control device.
In summary, the following steps: according to the condition of the pulling speed of the continuous casting machine, different working modes are set through the control module, so that the magnetic field generator of the flow field control device can emit magnetic fields in different forms, the molten steel using the crystallizer is subjected to electric stirring, braking and combined electromagnetic action, the flow field of the crystallizer is controlled, the continuous casting process of the continuous casting machine is improved, and the quality of a casting blank is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A slab caster crystallizer flow field controlling device which characterized in that: including two flow field control assembly (1) and control module, two flow field control assembly (1) symmetric distribution is in two wide copper (5) both sides of crystallizer, flow field control assembly (1) includes two by independent control's magnetic field generator (2) and connects two non-magnetic conductive connecting block (3) of magnetic field generator (2), two magnetic field generator (2) are upper portion magnetic field generator and lower part magnetic field generator respectively, magnetic field generator (2) include shell (22), be provided with in shell (22) and produce alternating current magnetic field or direct current magnetic field's inductor (21), shell (22) outside terminal surface both sides are connected and are equipped with a plurality of cables (24), cable (24) pass through control module connection power, control module is located the production line switch board.
2. The slab caster crystallizer flow field control device of claim 1, wherein: the connecting block (3) is H-shaped, and the upper magnetic field generator and the lower magnetic field generator are symmetrically connected to the upper groove and the lower groove of the connecting block (3).
3. The slab caster crystallizer flow field control device of claim 1, wherein: the inductor (21) mainly comprises an E-shaped iron core (211) and an excitation coil (212).
4. The slab caster crystallizer flow field control device of claim 3, wherein: the E-shaped iron core (211) is formed by laminating silicon steel sheets, the E-shaped iron core (211) comprises 4N or 6N magnetic poles (2111), and N is a positive integer.
5. The slab caster crystallizer flow field control device of claim 4, wherein: the excitation coil (212) is wound on the magnetic pole (2111), the excitation coil (212) is a concentrated short-moment winding coil, and the excitation current in the excitation coil (212) is 0-1000A.
6. The slab caster crystallizer flow field control device of claim 4, wherein: the magnetic pole (2111) penetrates out of the shell (22), and the distance between the upper side surface (21111) of the magnetic pole (2111) and the copper plate end surface (51) of the wide-surface copper plate (5) of the crystallizer is 90-200 mm.
7. The slab caster crystallizer flow field control device of claim 1, wherein: the cable (24) both sides still be equipped with a pair of heat dissipation water pipe (23) on shell (22), heat dissipation water pipe (23) are including heat dissipation inlet tube and heat dissipation outlet pipe.
8. The slab caster crystallizer flow field control device of claim 1, wherein: the control module includes an alternating mode, a braking mode, and a hybrid mode.
9. The slab caster crystallizer flow field control device of claim 1, wherein: the power supply comprises an alternating current power supply or a direct current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122834490.3U CN216324987U (en) | 2021-11-18 | 2021-11-18 | Flow field control device for crystallizer of slab continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122834490.3U CN216324987U (en) | 2021-11-18 | 2021-11-18 | Flow field control device for crystallizer of slab continuous casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN216324987U true CN216324987U (en) | 2022-04-19 |
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| CN202122834490.3U Active CN216324987U (en) | 2021-11-18 | 2021-11-18 | Flow field control device for crystallizer of slab continuous casting machine |
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- 2021-11-18 CN CN202122834490.3U patent/CN216324987U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of slab continuous casting machine mold flow field control device Effective date of registration: 20220818 Granted publication date: 20220419 Pledgee: Bank of Beijing Limited by Share Ltd. Changsha branch Pledgor: HUNAN KEMEIDA ELECTRIC Co.,Ltd. Registration number: Y2022430000073 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231101 Granted publication date: 20220419 Pledgee: Bank of Beijing Limited by Share Ltd. Changsha branch Pledgor: HUNAN KEMEIDA ELECTRIC Co.,Ltd. Registration number: Y2022430000073 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Flow Field Control Device for the Mold of a Billet Continuous Casting Machine Effective date of registration: 20231107 Granted publication date: 20220419 Pledgee: Bank of Beijing Limited by Share Ltd. Changsha branch Pledgor: HUNAN KEMEIDA ELECTRIC Co.,Ltd. Registration number: Y2023980064165 |